Ge2Rb4Se6
Ge2Rb4Se6 is a thermodynamically stable semiconducting material being explored as a potential candidate for advanced photovoltaic and optoelectronic applications.
About Ge2Rb4Se6
Ge2Rb4Se6 is a semiconducting compound that occupies a distinct position within the broader landscape of halide-related photovoltaic materials. Its status as a thermodynamically stable phase on the convex hull suggests a robust structural integrity that is highly desirable for long-term material applications.
This compound represents an intriguing alternative to traditional lead-based perovskites. By incorporating germanium and rubidium, it offers a unique electronic environment that researchers are investigating to overcome the stability and toxicity limitations often found in conventional solar cell materials.
Key Properties
Cross-validated computational properties for Ge2Rb4Se6, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Ge2Rb4Se6, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 1.50 | 0.0000 | -3.956 | 3.81 |
| C2/m (No. 12) | — | — | — | — | — |
| — | — | — | — | — | 3.85 |
Applications
Where Ge2Rb4Se6 is used.
Frequently Asked Questions
Common questions about Ge2Rb4Se6, answered from cross-validated data.
What is Ge2Rb4Se6?
Ge2Rb4Se6 is a thermodynamically stable semiconducting material being explored as a potential candidate for advanced photovoltaic and optoelectronic applications.
What is Ge2Rb4Se6 used for?
What is the band gap of Ge2Rb4Se6?
Is Ge2Rb4Se6 a metal, semiconductor, or insulator?
Is Ge2Rb4Se6 thermodynamically stable?
What is the crystal structure of Ge2Rb4Se6?
What is the density of Ge2Rb4Se6?
How many polymorphs of Ge2Rb4Se6 are known?
What elements does Ge2Rb4Se6 contain?
Where does the data for Ge2Rb4Se6 come from?
How It Compares
Within the halide perovskite photovoltaics class.
Unlike the widely studied lead-halide perovskites such as CsPbBr3 or CsSnI3, Ge2Rb4Se6 utilizes a chalcogenide framework that provides a different approach to band engineering and structural stability. While many members of this class, including RbPbF3 and Cs4I12Sn4, focus on halide-based architectures, this compound highlights the potential of selenium-based systems to provide stable, semiconducting alternatives in the search for next-generation optoelectronic materials.
Related Compounds
Other Halide Perovskite Photovoltaics in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
Analyze Ge2Rb4Se6 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →